GPUTEK Bike Electric Air Pump: 150Psi Portable Bicycle Tire Pump with Digital Pressure Gauge for Road Bike, Mountain Bike, E-Bike, Motorcycle with Presta, Schrader, Dunlop Valve Accessories

I had purchased an electric pump a couple of years ago that did not work well at all with the Schrader valve of my road bike and overheated to the point that you could not hold it. So when I decided to try this pump, I was cautiously skeptical. Much to my surprise it works great! It pumps quickly and does not get hot. I would strongly recommend this to anyone looking for an easier way to pump up tires. If I have any complaint or design encouragement it would be to design the attachment valve to be quick release so no air is lost in the processing of its removal. But this is minor in the overall big picture.

Arrived same day which is above and beyond. Only used once, but electric pump seems great and exactly what I was looking for. Very easy to use. Pump screws on to valve and pumps air like a compressor which technically it is so no more of that valve pressure when releasing hand pump. I was always afraid I would rip the valve when pulling off. Pump shits off automatically and psi is much more accurate than hand/foot pump- I checked pressure with a separate pressure reader device. I only used once so I cannot comment on longevity of electric pump, but so far so great. Recommended for sure.

This worked long enough to get past the return window. I only use it for bike tires with standard schrader valves. I see other reviewers had the exact same problem: when properly connected, and set for 50 pounds, when turning it on the display immediately reads 50 and it shuts off. I tried to reach out to the manufacturer and that option is not available. I see they are still selling this model, hopefully they have corrected this issue.

First try, this seems to work well. We have both schrader and presta bikes at home, and when looking at various pumps on Amazon I had trouble figuring out whether the pumps would work with a presta stem. This one does. But the directions are not entirely clear, so for what it's worth on just this small point: The hose connector is for both presta and scrhader. Don't worry about the other adapter in the bag if all you want are these two types. It comes set up for schrader. Just connect the main hose. Turn power on by holding button for 3 seconds. The air pressure indicator was preset at 100 but it was easy to hit the minus button to get it down to 80 for my tires. Screw the end onto the schrader stem and the tire pressure should show up. Then a single press of the power button and it turns on and then will automatically turn off when it hits 80. The presta connection wasn't intuitive, to me anyway, but the connection at the end of the hose is about an inch long and made up of two main parts. If you unscrew the two parts you will be able to tell when the thread has come out. But what you can't tell is that it needs just a little tug and the two parts will slide apart about a half inch, exposing a small brass fitting. When you look in the connection you'll see that it has made room for the narrower presta connection. So, prepare your bike presta tube as you would to get filled up with a regular pump, then, like the schader connection, the presta connector will screw into your presta tire. For whatever reason my tires didn't automatically show the tire pressure, but I had to press the hose once toward the valve stem and the pressure then registered. I filled 2 bikes (4 presta tires) and I had to do that each time. Anyway, when reading the directions, it really didn't make sense to me. But after figuring out and then looking back at the directions, it made more sense. The diagrams could be a bit better. So, first time out, I filled 3 bikes (4 presta tires and 2 schrader tires). The battery indicator went from green to amber and then to red by the time they were all filled (but not flashing red). I saw one reviewer said that the battery didn't even last for one tire. But it wasn't that way for me. Still that's not great battery capacity for hybrid/commuter type bikes. Takes about an hour to recharge it back to green.

I had no trouble understanding the directions and using the pump. It's nice to see the starting pressure when you attach the hose to a valve, and that confirms it's attached fully. I used it to top off four bike tires. For one of them, I did not get the initial pressure. There is a part you turn to switch between Schrader and Presta valves which I had inadvertently loosened. That caused the hose to not fully engage the Schrader valve. Once I tightened that part, it worked perfectly. The pump should be easy to pack into a repair kit to carry on our longer rides.

i keep this on my motorcycle for those times that i need to do a little inflation. i store the front tire, rear tire, and suspension settings on the device so that i can power up, pump up, and go, making it easy to use. charges reasonably quick. pumps a reasonable volume; enough to top off a normal car tire with enough time and charge. fits in a pocket. a word of warning: the hose end is built with aluminum and brass which can fail. mine failed at the threads. i am looking for an original replacement to retain the original capabilities, but have replaced it with a generic Shrader type hose. USB-C powered charge. output port is Schrader threads and can be used directly to pump valveless products like balls and inflatables.

A must have. I used this for my ebike and it was small enough to easily fit in my storage bag. It's very light and holds a charge forever. It works well and it's worth the money.

We have two bicycles with different air valves. I bought two different hand pumps for them. Difficult to pump at home in the garage and too large to carry on bike rides. My new battery operated air pump is easy to use on both air valves with the adapters included with the rechargeable air pump. It fits in my bike saddle so I am able to take it on our rides. Great tool at a great price. Fast shipping from Amazon. Makes my life less complicated

This is an amazing pump. So easy to use and very effective. The only negative is it is a bit heavier than other pumps on the market, albeit that is reflected in the price, but as I have a rear carrier on my bike this is not an issue.

Work great for a year

Gutes Gerät

It's a bit noisy, but it's not a problem to have a loud pump. This is easier to carry than a regular manual bike pump, much easier to pump the bike tyres up than a manual bike pump, easy to read digital pressure gauge. Works with Schrader and Presta valves (which is good because I have Presta valves on my bike, my kids and my partners all have Schrader valves - just one pump needed). Charges up by USB and the battery has never gone flat on me.

Looks a well made piece of kit. Maybe twice the weight of a bicycle pump. Only pumped up 4x27inch medium width tyres from totally flat to 50psi plus 1x18inch kids mountain bike tyre from soft to 50psi before battery ran out. Probably took about 2 minutes per tire. Not quite what is claimed but these things never are. Generally happy and much easier than a traditional bicycle pump. Charges up again in about 90 minutes with USB.